Ribbed frame



FIG. 1 is a perspective view of a ribbed frame;

FIG. 2 is top view of the ribbed frame illustrated in FIG. 1;

FIG. 3 is a right side view of the ribbed frame illustrated in FIG. 1;

FIG. 4 is a left side view of the ribbed frame illustrated in FIG. 1;

FIG. 5 is a bottom view of the ribbed frame illustrated in FIG. 1; and,

FIG. 6 is a front view of the ribbed frame illustrated in FIG. 1. 

CLAIM The ornamental design for a ribbed frame, as shown and described. 